CN109594434B - A nacre structure rail damper - Google Patents

Abstract

The invention relates to a steel rail damper with a nacre layer structure. The steel rail damper is used to fit on the rail waists on both sides of the steel rail to attenuate the vibration noise during driving. The steel rail damper is arranged in sequence from the inside to the outside It comprises an elastic adhesive layer (3), a metal connection layer (4) and a pearl composite layer (5), and the pearl composite layer (5) comprises a mass block (51), an elastic block (52) and a mass block covered (51), the elastic coating layer (53) outside the elastic block (52), the mass block (51) and the elastic block (52) are staggered along the height direction of the rail. Compared with the prior art, the present invention has the advantages of realizing large-scale production, rapidly consuming noise energy and the like.

Description

A nacre structure rail damper

technical field

The invention relates to the field of vibration reduction and noise reduction of rail traffic, in particular to a nacre structure steel rail damper.

Background technique

With the massive construction of urban rail transit, more and more rail transit lines approach or even pass through buildings that require vibration control. At present, vibration control is mainly carried out through three aspects: track vibration reduction, propagation path vibration isolation, and vibration isolation of the receiving body (such as buildings, etc.). From the perspective of vibration source, the rail vibration reduction measures have a direct impact on the environmental vibration control effect. The rail damper can improve the wheel-rail contact relationship and effectively reduce the vibration and noise caused by driving.

In order to reduce the noise caused by the vibration of the rail web, the commonly used rail damper is pasted with vibration damping rubber on the rail belly. Generally, the rubber is pasted on the rail belly and then the steel plate is pasted to increase the vibration quality and attenuate. Among them, it is required to use high damping rubber to increase the vibration damping effect and achieve the purpose of noise reduction.

The patent with the patent number of CN201710655786.4 discloses a piston-type rail damper, which is installed on both sides of the rail waist of the rail. The piston-type rail damper includes a rubber plate and piston-type particles embedded in the rubber plate. A damping element; the piston-type particle damping element comprises a casing, and damping particles and metal balls are arranged inside the casing; the metal balls and the rubber plate are connected and fixed by wires. The technical solution adopts the method of filling damping particles and metal balls in series in the rubber to achieve the purpose of noise reduction.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a nacre structure rail damper in order to overcome the above-mentioned defects of the prior art.

The object of the present invention can be realized through the following technical solutions:

A nacre structure steel rail damper, the steel rail damper is used to fit on the rail waist on both sides of the steel rail to weaken the vibration noise during driving, and the steel rail damper sequentially includes elastic adhesive from the inside to the outside. The sticking layer, the metal connecting layer and the pearl composite layer, the pearl composite layer includes a mass block, an elastic block and an elastic coating layer covering the outside of the mass block and the elastic block, and the mass block and the elastic block are along the height of the rail The directions are staggered.

Further, the mass block and the elastic block are both hexahedral structures,

Further, the maximum side length of the mass block and the elastic block is 1/20-1/5 of the height of the rail waist of the rail.

Further, the mass blocks and the elastic blocks are arranged in a row along the extending direction of the rail, and the rows of the mass blocks and the elastic blocks are staggered.

Further, gaps are provided between the mass blocks in each row and between the elastic blocks in each row, and the gaps are filled by the elastic coating layer.

Further, the elastic adhesive layer, the metal connecting layer and the pearl composite layer are fastened to each other by means of gluing or clamping.

Further, one surface of the mass block and the elastic block is closely attached to the metal connecting layer.

Further, the lengths of the rows formed by the mass blocks and the rows formed by the elastic blocks are both 0.2 to 0.8 m.

Further, the elastic block and the elastic coating layer are both elastic rubber materials, and the mass block is steel or alloy steel material.

Further, the elastic adhesive layer is made of elastic rubber material, and the metal connection layer is made of steel or alloy steel material.

Compared with the prior art, the present invention has the following advantages:

1. The mass block and the elastic block in the present invention are obtained by cutting steel strips and rubber strips respectively, which can realize rapid industrial production in batches, and is also completely completed by a robot during the process of stacking in a row, and the production efficiency is high.

2. In the present invention, the nacre structure composed of mass blocks and elastic blocks which are covered in elastic rubber and arranged in a staggered manner is adopted. Can strengthen.

3. In the present invention, the nacre layer is designed by staggered stacking of hexahedral steel blocks and hexahedral rubber elastic blocks, so that the vibration energy is transmitted to the pearl from the elastic adhesive layer and the metal connection layer in turn, so that the mass block and the elastic block generate internal friction and mutual interaction. Dislocation makes a large amount of energy converted into heat energy and dissipated in the process, thus significantly reducing the noise energy radiated by vibration.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the rail damper in the present invention;

2 is a schematic diagram of the arrangement structure of the mass block and the elastic block in the present invention;

3 is a schematic diagram of the coating structure of the elastic coating layer in the present invention;

FIG. 4 is an assembly effect diagram of the present invention on the rail.

In the picture: 3. Elastic adhesive layer, 4. Metal connection layer, 5. Pearl composite layer, 51. Mass block, 52. Elastic block, 53. Elastic coating layer.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The nacre structure rail damper is attached to the rail waist on both sides of the rail. The rail damper includes an elastic adhesive layer 3, a metal connection layer 4 and a pearl composite layer 5 sequentially from the inside to the outside, see Figure 1. The pearl composite layer 5 includes a mass block 51 , an elastic block 52 and an elastic coating layer 53 covering the outside of the mass block 51 and the elastic block 52 , see FIG. 2 .

In the specific assembly process, the steel strip and the elastic rubber strip are first cut into hexahedral blocks, that is, the mass block 51 and the elastic block 52 are obtained, wherein the maximum side length of the control mass block 51 and the elastic block 52 is the height of the rail waist of the rail 1/20~1/5 of the size, after the size is selected, the size of the control mass block 51 and the elastic block 52 is as uniform as possible in each cutting process. Then, the mass blocks 51 and the elastic blocks 52 are arranged in a row along the extending direction of the rail. There is a gap, the length of the line of the control mass block 51 and the line of the elastic block 52 are both 0.2-0.8m, and the gap is filled by the elastic coating layer 53, see Figure 3, so that the mass along the height direction of the rail is formed. The blocks 51 and the elastic blocks 52 are arranged in a staggered structure, so that the pearl composite layer 5 is made. Afterwards, the elastic adhesive layer 3, the metal connection layer 4 and the pearl composite layer 5 are fastened to each other by means of gluing or clamping, so that one surface of the mass block 51 and the elastic block 52 is closely attached to the metal connection layer 4. superior. Finally, the elastic adhesive layer 3 is fixed on the rail waists on both sides of the rail by gluing or metal clamps, as shown in FIG. 4 .

Claims (1)

1. a nacre structure rail damper, the rail damper is fitted on the rail waist on both sides of the rail, for the vibration noise during driving is weakened, it is characterized in that, the rail damper is made of It includes an elastic adhesive layer (3), a metal connecting layer (4) and a pearl composite layer (5) in turn from the inside to the outside, and the pearl composite layer (5) includes a mass block (51), an elastic block (52) and a package. an elastic coating layer (53) covering the outside of the mass block (51) and the elastic block (52), the mass block (51) and the elastic block (52) are staggered along the height direction of the rail; The mass blocks (51) and the elastic blocks (52) are both hexahedral structures, the mass blocks (51) and the elastic blocks (52) are arranged in a row along the extending direction of the rail, and the rows of the mass blocks (51) are aligned with the rails. The elastic blocks (52) are arranged in staggered rows, and gaps are provided between the mass blocks (51) in each row and between the elastic blocks (52) in each row, and the gaps are filled by the elastic coating layer (53); The maximum side length of the mass block (51) and the elastic block (52) is 1/20~1/5 of the height of the rail waist; The elastic adhesive layer (3), the metal connecting layer (4) and the pearl composite layer (5) are fastened to each other by means of gluing or snapping, and the mass block (51) and the elastic block (52) There is a surface closely attached to the metal connection layer (4); The lengths of the line formed by the mass block (51) and the line formed by the elastic block (52) are both 0.2~0.8m; The elastic block (52) and the elastic coating layer (53) are both elastic rubber materials, the mass block (51) is steel or alloy steel material, and the elastic adhesive layer (3) is elastic rubber Material, the metal connection layer (4) is made of steel or alloy steel.

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